Turner and I hate to appear so dumb, but so far it's clear as mud. Why not list all the possibilities with 4 spins sets and tell us what to bet. Here are the ones I can think of:
1 1 1 1 I assume the next bet is for 1 for a repeat
2 1 1 2 I assume ...
1 1 1 1 I assume the next bet is for 1 for a repeat
2 1 1 2 I assume ...